
Sumup · Cologne
ABOUT THE TEAM At SumUp, we're on a mission to bring merchants and consumers closer together and help local communities thrive. Within the Consumer Mission, we...
At SumUp, we're on a mission to bring merchants and consumers closer together and help local communities thrive. Within the
Consumer Mission, we're building a rewarding banking experience that connects people to the small businesses they love while
tackling some of the most technically demanding challenges in fintech: critical infrastructure migrations, smooth, uninterrupted
payment experiences, seamless open banking integrations, and high‑availability banking systems that can’t afford to fail – all
while enabling free transactions for our merchants.
This role sits at the heart of that work — you’ll take real ownership of backend services that are close to our consumers,
directly shaping their everyday experience, with impact that’s visible and felt across the entire platform.
🎥 Take a look inside our London office
payment processing
maintenance, leveraging Go along with Docker and Kubernetes for container orchestration.
customer experiences
understand requirements, provide technical insights, and contribute to architecture discussions that ship meaningful banking
features end-to-end
automation, and security to raise the overall engineering bar.
monitoring, alerting, and hands‑on involvement in incident response and post‑mortems.
requirements
domains
priorities shift
Any of the following would be considered a plus
No visa sponsorship available with this position
office-first setup
environment where everyone's perspectives are respected and embraced
Be empowered to do more that matters.
At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them
to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and
customer relationships.
Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by
global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping
our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for
personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone
belongs and feels supported, no matter how they identify.
SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't
make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality,
sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by
company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form
is strictly prohibited. Discover more about our culture and opportunities on our careers website, and follow our journey on
LinkedIn, Instagram, and TikTok.
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Job Application Tip
We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is
only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.
Build technology that protects people, places, and everyday life. Your work won’t sit quietly in a backlog. It will shape secure, connected solutions used around the world — and you’ll have the trust and freedom to do your best work along the way. Why this role matters At Assa Abloy, technology plays a direct role in creating a safer, more open world. As a Senior Backend Engineer, you’ll be part of teams building secure, scalable digital platforms that power smart access solutions globally. This is a role for someone who wants to own meaningful problems, contribute to technical direction, and work in an environment where quality, balance, and long-term thinking genuinely matter. The role You’ll work as part of a small, cross-functional team with shared end-to-end responsibility, collaborating closely to drive work from idea to delivery and continuous improvement. The team owns both the direction and execution, with a strong focus on improving our customers’ hospitality experience. In this role, you’re expected to take initiative and help move work forward, ensuring progress and alignment across disciplines. You’ll challenge assumptions, surface risks early, and contribute to sound technical decisions by bringing clarity, pragmatism and focus to complex discussions while helping the team deliver meaningful, high-quality outcomes. What you’ll work on Deliver meaningful features end-to-end — design, build, test, deploy, and evolve backend-focused services with a strong sense of ownership and quality. Build modern, scalable systems — develop primarily in Java, Kotlin, Golang, collaborating with frontend engineers and contributing where needed to React/TypeScript applications. Shape architecture and technical direction — apply Domain-Driven Design, Test-Driven Development, microservice and event-driven patterns to solve complex problems and raise the bar across the team. Lead cloud-native development — design and operate services on AWS, using containers, orchestration platforms, and serverless patterns to build resilient, future-proof solutions. Design data and system behaviour at scale — model data across NoSQL and relational systems, ensuring performance, reliability, and secure operation in distributed environments. Strengthen delivery and operational excellence — improve CI/CD pipelines, support production systems, and continuously refine engineering practices for long-term sustainability. What will help you succeed Solid senior experience (5+ years) building backend systems in cloud-native, distributed environments. Strong ownership mindset — you’re comfortable taking a feature from idea to production and standing behind your decisions. Architectural judgement — you know when and how to apply DDD, TDD, microservices, and event-driven design pragmatically. Hands-on cloud and DevOps experience — particularly with AWS, containerisation, CI/CD, and modern deployment models. Experience leveraging AI-assisted development tools and methods to enhance productivity, code quality, and system design. Clear, thoughtful communication and a willingness to mentor others. Why Assa Abloy At Assa Abloy, you’ll join a global organisation with a distinctly Scandinavian approach to work: trust over control, clarity over noise, and people over process. Meaningful mission — Your software helps protect homes, businesses, and communities around the world, contributing to solutions people rely on every day Innovation at scale — Work with modern cloud platforms, event-driven architectures, and evolving technologies in a global environment Autonomy and trust — You’re trusted to make decisions, influence design, and own your work from idea to impact Growth and development — Learn continuously, deepen your technical expertise, and explore opportunities across teams and borders Work–life balance — Flexible working, hybrid options, and a culture that supports sustainable performance Ready to build something that matters? If you’re looking for a senior developer role where your skills, judgement, and wellbeing are genuinely valued, we’d love to hear from you. Apply today and bring your expertise to a role where your decisions truly shape the future of smart access. We review applications continuously, so don’t wait. We’re committed to building diverse, inclusive teams and encourage applications from all who see themselves thriving here. To make sure your personal data stays protected, we do not review applications sent via email or post. If you have questions about the role or process, contact Léa Rein, Senior Talent Acquisition Business Partner. Let’s create a safer and more open world — together. We are the ASSA ABLOY Group Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces – physical and virtual – safer, more secure, and easier to access. As an employer, we value results – not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions – supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally. As we welcome new people on board, it’s important to us to have diverse, inclusive teams, and we value different perspectives and experiences.
ABOUT US Legora is redefining how legal work gets done. Not built for lawyers, built with them. We work alongside the world’s best legal teams, who expect excellence, precision, and speed, and we hold ourselves to the same bar. Our AI-native workspace lets legal professionals move faster, think more clearly, and operate with sharper precision. By analysing thousands of documents in minutes and powering end-to-end workflows, we cut through complexity, teams can focus on what matters: judgment, strategy, and outcomes. 1,000+ customers across 50+ countries trust us, including Cleary Gottlieb, Goodwin, Linklaters, White & Case, Dentons, and Barclays. We’ve scaled to $100M+ in ARR, with teams across Europe, North America and APAC, and continue to expand through acquisitions including Qura, Walter AI and Graceview. We partner with world-class performers: including Aaron Judge and the New York Yankees, Ludvig Åberg (and his caddie), and campaigns featuring Jude Law. Joining Legora means three things. * We lean in: ownership over titles, outcomes over intentions. * We fight for excellence: high standards, direct, ego-free feedback. * We grow together: as a team and with our customers. Mission before ego. Everyone contributes. No one coasts. If you’re driven by impact, pace, and raising the bar. This is the place. The role As a Senior Backend Engineer at Legora you will build, review and ship amazing products helping legal professionals all over the world in their day-to-day job. You’ll get the chance to work across the entire tech stack with clear ownership and autonomy. What you will be doing: * Architect and implement features for our web platform * Take ownership of our codebase, balancing high-quality code, security and speed of development * Work with technologies such as Node.js, Postgres, Elasticsearch, AWS, Azure and Kubernetes * Review code and mentor junior colleagues to support them in their development, making the team even better! * Drive continuous improvement and challenge us, the industry and yourself * You’ll travel regularly to Stockholm for onboarding, collaboration, and major product milestones — working shoulder-to-shoulder with the team when it matters most. Who you are * A passionate engineer with several years of experience building great products using cutting-edge technologies * You feel comfortable working across the entire tech stack, with focus on backend development * You’re autonomous and take pride in the code you write * You’re a problem solver who’s not afraid to come up with creative solutions and think holistically about software architecture * Experience in infrastructure and integrations are a big plus Legora is an Equal Opportunity Employer At Legora, we believe great teams are built on diversity of thought and experience. We’re proud to be an equal opportunity employer and committed to creating an inclusive, high-performance culture where everyone can do their best work. We welcome people of all backgrounds and don’t discriminate based on race, color, religion, national origin, gender, gender identity or expression, sexual orientation, age, disability, veteran status, or any other characteristic protected by law.
About the company A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries. Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world. About the role We are looking for a Senior backend engineer to join our Stockholm office with strong, hands‑on expertise in modern Java, experienced in building and maintaining distributed systems and microservices. Brings solid proficiency in CI/CD and Azure DevOps (or comparable platforms), along with practical knowledge of cloud environments, containerization technologies such as Docker and Kubernetes, automated testing practices, and operating services reliably in production. Main responsibilities •Focus on backend development, with responsibility for services, databases, and system integrations. • Develop, improve, and maintain services with a strong focus on reliability, scalability, and long-term maintainability. • Select and use technologies based on problem-solving value, not trendiness. • Ensure that deliveries are on time and secure, always balancing speed with quality. • Collaborate closely with teammates and stakeholders, enabling fast and sustainable delivery. • Over time, take a leading role in driving improvements in both technology and ways of working. Our Tech Stack (key areas for this role) • Java (primary language: deep expertise required) • Spring Boot • REST, Microservices, Databases • Azure (cloud environment), Docker, Kubernetes About you • Highly experienced in backend Java development and proficient with Azure. • Results-oriented: you deliver what is needed, when it is needed. • Pragmatic: you enjoy new technology but choose what best solves the current problem while limiting technical debt. • Humble and grounded: you listen, collaborate, and keep the team's health in mind. • Independent yet collaborative: you take initiative but thrive in teamwork. • User-focused: the end user's experience is always your guiding star. Qualifications • Extensive experience in Java backend development (main requirement). • Experience with Spring Boot and modern development practices. • Solid understanding of Microservices and integrations. • Professional proficiency in English. What we offer • Impactful work: Your code directly powers secure identity services used by real customers worldwide. • A pragmatic environment: We value smart choices over shiny tools. You'll use the most adapted technologies to solve problems, reduce complexity, and limit future technical debt. • A healthy team culture: We believe in humility, collaboration, and keeping team well-being in balance with delivery goals. • End-to-end responsibility: You'll see the whole lifecycle, from development through deployment to customer use. • Growth into leadership: Over time, you'll have the opportunity to take on a bigger role in driving initiatives and supporting others in the team. Öppen för alla Vi fokuserar på din kompetens, inte dina övriga förutsättningar. Vi är öppna för att anpassa rollen eller arbetsplatsen efter dina behov.